Patents by Inventor Tatsuya Kubo

Tatsuya Kubo has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Publication number: 20150346635
    Abstract: A powder container includes a powder chamber for containing powder for forming images, a powder outlet formed in a face of the powder container, and a shutter assembly to open and close the powder outlet and including first and second shutters. The first shutter is movable between a sealing position to close the powder outlet and an open position to open the powder outlet and includes a pressed member to cancel retention of the first shutter at the sealing position. The second shutter includes a pressing projection that interferes with the pressed member of the first shutter and is movable between a shielding position to cover the pressed member without interference between the pressing projection and the pressed member and a releasing position to press the pressed member with the pressing projection.
    Type: Application
    Filed: August 11, 2015
    Publication date: December 3, 2015
    Inventors: Kentaro NODERA, Emi KITA, Akihiro TAKAYAMA, Susumu TATEYAMA, Shinnosuke KOSHIZUKA, Tatsuya KUBO, Teppei KIKUCHI
  • Publication number: 20150323884
    Abstract: A toner cartridge includes a toner container to store toner and two rotary agitation members to rotate to agitate toner in the toner container. The toner container has two arc-shaped portions adjacent to each other at an inner bottom wall of the toner container. The two rotary agitation members has edges to rotate along the two arc-shaped portions with rotation phases thereof shifted from each other. The two rotary agitation members are placed with rotation trajectories thereof partially overlapping each other.
    Type: Application
    Filed: July 17, 2015
    Publication date: November 12, 2015
    Inventors: Teppei KIKUCHI, Hideki KOSUGI, Tatsuya KUBO, Akira FUJIMORI, Kentaro NODERA, Shinnosuke KOSHIZUKA
  • Patent number: 9154649
    Abstract: A data reader includes a memory board provided to a removable member and a reading member including a reading terminal. The memory board includes a positioning opening, a ground terminal provided to the positioning opening, and a contact terminal. The reading member includes an engagement projection that fits in the positioning opening and is disposed adjacent and parallel to the reading terminal. The engagement projection includes a uniform diameter portion, a tapered portion extending from the uniform diameter portion, and an apparatus-side ground terminal to contact the ground terminal of the memory board when the engagement projection fits in the positioning opening. The apparatus-side ground terminal includes a portion projecting laterally from the uniform diameter portion from an end of the uniform diameter portion toward a reading member base and an extended portion at the end of the uniform diameter portion, covered with the tapered portion.
    Type: Grant
    Filed: April 17, 2014
    Date of Patent: October 6, 2015
    Assignee: Ricoh Company, Ltd.
    Inventors: Akira Fujimori, Hideki Kosugi, Tatsuya Kubo, Kentaro Nodera, Shinnosuke Koshizuka, Teppei Kikuchi
  • Patent number: 9146501
    Abstract: A toner cartridge includes a toner container to store toner and two rotary agitation members to rotate to agitate toner in the toner container. The toner container has two arc-shaped portions adjacent to each other at an inner bottom wall of the toner container. The two rotary agitation members has edges to rotate along the two arc-shaped portions with rotation phases thereof shifted from each other. The two rotary agitation members are placed with rotation trajectories thereof partially overlapping each other.
    Type: Grant
    Filed: April 24, 2014
    Date of Patent: September 29, 2015
    Assignee: Ricoh Company, Ltd.
    Inventors: Teppei Kikuchi, Hideki Kosugi, Tatsuya Kubo, Akira Fujimori, Kentaro Nodera, Shinnosuke Koshizuka
  • Patent number: 9146497
    Abstract: A powder container includes a powder chamber for containing powder for forming images, a powder outlet formed in a face of the powder container, and a shutter assembly to open and close the powder outlet and including first and second shutters. The first shutter is movable between a sealing position to close the powder outlet and an open position to open the powder outlet and includes a pressed member to cancel retention of the first shutter at the sealing position. The second shutter includes a pressing projection that interferes with the pressed member of the first shutter and is movable between a shielding position to cover the pressed member without interference between the pressing projection and the pressed member and a releasing position to press the pressed member with the pressing projection.
    Type: Grant
    Filed: March 4, 2013
    Date of Patent: September 29, 2015
    Assignee: Ricoh Company, Ltd.
    Inventors: Kentaro Nodera, Emi Kita, Akihiro Takayama, Susumu Tateyama, Shinnosuke Koshizuka, Tatsuya Kubo, Teppei Kikuchi
  • Publication number: 20150261134
    Abstract: A developer container includes a container body, a rotary shaft, a rotary stirrer, and a flexible blade. The container body contains developer and has a discharge port. The rotary stirrer includes a rotary support and rotates about the rotary shaft to stir and transport the developer. The rotary support includes a base end rotatable integrally with the rotary shaft, a free end spaced away from an inner wall of the container body, and a holding surface provided at the free end or at a position shifted toward the rotary shaft away from the free end. The holding surface is parallel to or inclined relative to a rotation direction of the rotary support. The flexible blade includes a base end portion held on the holding surface and a distal end to contact the inner wall and transport the developer to the discharge port.
    Type: Application
    Filed: March 9, 2015
    Publication date: September 17, 2015
    Inventors: Teppei KIKUCHI, Hideki KOSUGI, Tatsuya KUBO, Shinnosuke KOSHIZUKA, Kazunori SUZUKI, Atsushi NAKAMOTO
  • Patent number: 9110403
    Abstract: A toner-container support unit is provided. The toner-container support unit includes: a toner container housing toner; a container mount including an internal space to accommodate the toner container; a toner-container receiver which is provided on an internal end side of the internal space of the container mount; a positioning hole formed on the back end surface of the toner container; a positioning pin provided in the toner-container receiver; a retracting assembly retracting a back end portion of the toner container to a toner-container receiver side when inserting the toner container into the container mount; and an inclination stopper which prevents the inclination of the toner container when the back end portion of the toner container is retracted by the retracting assembly toward the toner-container receiver.
    Type: Grant
    Filed: April 28, 2014
    Date of Patent: August 18, 2015
    Assignee: RICOH COMPANY, LTD.
    Inventors: Akira Fujimori, Hideki Kosugi, Tatsuya Kubo, Kentaro Nodera, Shinnosuke Koshizuka, Teppei Kikuchi
  • Patent number: 8886094
    Abstract: A toner supply device including a casing and a shutter member. The casing includes a toner container for containing toner, a discharge aperture for discharging the toner from the toner container, and an aperture. The shutter member includes an elastic part having at least one bending portion and the elastic part is elastically deformable. The shutter member is insertable into the casing through the aperture to be movable between a closed position at which the discharge aperture is closed and an opened position at which the discharge aperture is opened while the elastic part is kept elastically deformed.
    Type: Grant
    Filed: August 16, 2012
    Date of Patent: November 11, 2014
    Assignee: Ricoh Company, Ltd.
    Inventors: Shinnosuke Koshizuka, Hiroyuki Uenishi, Susumu Tateyama, Tatsuya Kubo, Akihiro Takayama, Kentaro Nodera, Emi Kita
  • Publication number: 20140320906
    Abstract: A data reader includes a memory board provided to a removable member and a reading member including a reading terminal. The memory board includes a positioning opening, a ground terminal provided to the positioning opening, and a contact terminal. The reading member includes an engagement projection that fits in the positioning opening and is disposed adjacent and parallel to the reading terminal. The engagement projection includes a uniform diameter portion, a tapered portion extending from the uniform diameter portion, and an apparatus-side ground terminal to contact the ground terminal of the memory board when the engagement projection fits in the positioning opening. The apparatus-side ground terminal includes a portion projecting laterally from the uniform diameter portion from an end of the uniform diameter portion toward a reading member base and an extended portion at the end of the uniform diameter portion, covered with the tapered portion.
    Type: Application
    Filed: April 17, 2014
    Publication date: October 30, 2014
    Inventors: AKIRA FUJIMORI, HIDEKI KOSUGI, TATSUYA KUBO, KENTARO NODERA, SHINNOSUKE KOSHIZUKA, TEPPEI KIKUCHI
  • Publication number: 20140321885
    Abstract: A toner-container support unit is provided. The toner-container support unit includes: a toner container housing toner; a container mount including an internal space to accommodate the toner container; a toner-container receiver which is provided on an internal end side of the internal space of the container mount; a positioning hole formed on the back end surface of the toner container; a positioning pin provided in the toner-container receiver; a retracting assembly retracing a back end portion of the toner container to the toner-container receiver side when inserting the toner container into the container mount; and an inclination stopper which prevents the inclination of the toner container when the back end portion of the toner container is retracted by the retracting assembly toward the toner-container receiver.
    Type: Application
    Filed: April 28, 2014
    Publication date: October 30, 2014
    Inventors: Akira FUJIMORI, Hideki KOSUGI, Tatsuya KUBO, Kentaro NODERA, Shinnosuke KOSHIZUKA, Teppei KIKUCHI
  • Publication number: 20140321886
    Abstract: A toner cartridge includes a toner container to store toner and two rotary agitation members to rotate to agitate toner in the toner container. The toner container has two arc-shaped portions adjacent to each other at an inner bottom wall of the toner container. The two rotary agitation members has edges to rotate along the two arc-shaped portions with rotation phases thereof shifted from each other. The two rotary agitation members are placed with rotation trajectories thereof partially overlapping each other.
    Type: Application
    Filed: April 24, 2014
    Publication date: October 30, 2014
    Inventors: Teppei KIKUCHI, Hideki KOSUGI, Tatsuya KUBO, Akira FUJIMORI, Kentaro NODERA, Shinnosuke KOSHIZUKA
  • Patent number: 8655237
    Abstract: A development device includes a developer bearer to carry the developer to a development range, a magnetic field generator disposed inside the developer bearer for generating magnetic force, a developer regulator for adjusting an amount of the developer, a developer supply compartment disposed adjacent to the developer bearer, separated by a side wall from a portion where the developer bearer is provided, a developer agitator provided in the supply compartment, and a blocker disposed above the side wall of the supply compartment across a supply gap through which the developer moves from the supply compartment. The magnetic field generator has an attraction magnetic pole and a regulation magnetic pole. The blocker prevents the developer blocked by the developer regulator from moving along a magnetic force line of the regulation magnetic force toward the circumferential surface of the developer bearer.
    Type: Grant
    Filed: September 6, 2013
    Date of Patent: February 18, 2014
    Assignee: Ricoh Company, Ltd.
    Inventors: Yuji Suzuki, Akihiro Takayama, Kentaro Nodera, Hiroyuki Uenishi, Susumu Tateyama, Shinnosuke Koshizuka, Tatsuya Kubo, Koichi Yamazaki
  • Publication number: 20140045999
    Abstract: The present invention provides a medical rubber having high cleanliness and excellent compression set resistance. The present invention relates to a medical rubber including an ethylene-propylene-diene rubber crosslinked by an organic peroxide having no aromatic ring structure.
    Type: Application
    Filed: August 9, 2013
    Publication date: February 13, 2014
    Applicant: SUMITOMO RUBBER INDUSTRIES, LTD.
    Inventors: Kazuo FUTAMATA, Kazuo Hochi, Tatsuya Kubo
  • Publication number: 20140003843
    Abstract: A development device includes a developer bearer to carry the developer to a development range, a magnetic field generator disposed inside the developer bearer for generating magnetic force, a developer regulator for adjusting an amount of the developer, a developer supply compartment disposed adjacent to the developer bearer, separated by a side wall from a portion where the developer bearer is provided, a developer agitator provided in the supply compartment, and a blocker disposed above the side wall of the supply compartment across a supply gap through which the developer moves from the supply compartment. The magnetic field generator has an attraction magnetic pole and a regulation magnetic pole. The blocker prevents the developer blocked by the developer regulator from moving along a magnetic force line of the regulation magnetic force toward the circumferential surface of the developer bearer.
    Type: Application
    Filed: September 6, 2013
    Publication date: January 2, 2014
    Applicant: RICOH COMPANY, LTD.
    Inventors: Yuji SUZUKI, Akihiro TAKAYAMA, Kentarou NODERA, Hiroyuki UENISHI, Susumu TATEYAMA, Shinnosuke KOSHIZUKA, Tatsuya KUBO, Kohichi YAMAZAKI
  • Patent number: 8620194
    Abstract: A developing device, process cartridge and image forming apparatus of a premix developing system, with which developer splashed by the transport member is not discharged from the device, fluctuations of the amount of developer discharged to the outside are not produced, and the output image quality is stable. This developing device is provided with a pocket part, which is installed in a depressed manner facing the outside in relation to the transport route formed by the transport member, and into and out of which part of the developer transported in the transport route flows. This pocket part is provided with a discharge port for discharging developer to outside the device when the surface of the developer flowing into the pocket part exceeds a specified height.
    Type: Grant
    Filed: March 6, 2012
    Date of Patent: December 31, 2013
    Assignee: Ricoh Company, Ltd.
    Inventors: Susumu Tateyama, Yoshitaka Fujinuma, Tatsuya Kubo
  • Publication number: 20130315636
    Abstract: A development device includes a developer bearer, a developer regulator to adjust an amount of developer on the developer bearer, a supply compartment adjacent to the developer bearer across a side wall formed monolithic with the development casing using an identical material, a developer supply member to transport developer in the supply compartment in an axial direction, and a channel forming member having higher rigidity than that of the side wall. The channel forming member defines, with the side wall, a supply route extending over an entire development range, through which developer moves from the supply compartment to the developer bearer, and defines, with an inner wall of the development casing, a collecting route through which developer blocked by the developer regulator is collected in the supply compartment. Both axial end portions of the channel forming member are supported by the development casing.
    Type: Application
    Filed: May 17, 2013
    Publication date: November 28, 2013
    Applicant: RICOH COMPANY, LTD.
    Inventors: Akihiro TAKAYAMA, Susumu TATEYAMA, Yuji SUZUKI, Tatsuya KUBO, Hiroyuki UENISHI, Kentaro NODERA, Shinnosuke KOSHIZUKA
  • Patent number: D698388
    Type: Grant
    Filed: March 5, 2013
    Date of Patent: January 28, 2014
    Assignee: Ricoh Company, Ltd.
    Inventors: Kentaro Nodera, Teppei Kikuchi, Akira Fujimori, Hideki Kosugi, Tatsuya Kubo, Shinnosuke Koshizuka
  • Patent number: D698857
    Type: Grant
    Filed: March 5, 2013
    Date of Patent: February 4, 2014
    Assignee: Ricoh Company, Ltd.
    Inventors: Kentaro Nodera, Teppei Kikuchi, Akira Fujimori, Hideki Kosugi, Tatsuya Kubo, Shinnosuke Koshizuka
  • Patent number: D698858
    Type: Grant
    Filed: March 5, 2013
    Date of Patent: February 4, 2014
    Assignee: Ricoh Company, Ltd.
    Inventors: Kentaro Nodera, Teppei Kikuchi, Akira Fujimori, Hideki Kosugi, Tatsuya Kubo, Shinnosuke Koshizuka
  • Patent number: D711965
    Type: Grant
    Filed: March 7, 2013
    Date of Patent: August 26, 2014
    Assignee: Ricoh Company, Ltd.
    Inventors: Kentaro Nodera, Teppei Kikuchi, Akira Fujimori, Hideki Kosugi, Tatsuya Kubo, Shinnosuke Koshizuka